Jan ( N = 544 )

Feb ( N = 771 )

Mar ( N = 1160 )

Apr ( N = 862 )

May ( N = 1089 )

Jun ( N = 1040 )

Jul ( N = 1106 )

Aug ( N = 1178 )

Sep ( N = 1122 )

Oct ( N = 1169 )

Nov ( N = 1093 )

Dec ( N = 1072 )